1. MAT 033: Engineering Materials and Processes Course Objective... Introduce fundamental concepts in Materials Science You will learn about: material structure how structure dictates properties how processing can change structure This course will help you to: use materials properly realize new design opportunities with materials

2. Lecturer: Chris Kiely Time: Mon 11.10 – 12.00 ; Weds 11.10-12.00 Location: 101 Packard Laboratory Activities: Present new material Announce reading and homework 2 Quizzes Lectures

3. Purpose: Discuss homework, quizzes and exams Hand back graded quizzes, exams Discuss concepts from lecture Times and Places: J.M. Rickman M. Watanabe R.P. Vinci J.M. Rickman A. Kovalskyy Th 12.10 pm Th 1.10 pm Fr 9.10 am Fr 10.10 am Fr 11.10 am 203 Whitaker Recitations start this week. Recitations

4. Required text: Fundamentals of Materials Science and Engineering: An Integrated Approach W.D. Callister, Jr. and D.G. Rethwisch, 3 nd edition, John Wiley and Sons, Inc. (2008). Course Material Option 1: Hardbound version: $200 (new) - $144 (used) Option 2: Simple ring binder version: $94 Option 3: On-line version $50 Option 4: Amazon Kindle version $97

5. Reading Schedule See the detailed course syllabus which is posted on:- coursesite Go to http://coursesite.lehigh.edu/ and login using your Lehigh username and passwordhttp://coursesite.lehigh.edu/ Course materials will be posted under:- MAT-033-00-FL10-ENGR MATLS & PROCESSES

6. Weekly homework problems – 20% Quiz #1 20% Scheduled for: 10/04 Material covered ; Lectures 1-8 Quiz #2 25% Scheduled for: 11/08 Material covered; Lectures 9-16 Final Exam 25% To be scheduled Material covered: everything w/extra emphasis on last 10 lectures Grading Recitation sessions/pop quizzes – 10%

7. The Weekly Homework “Cycle” Lectures are on Mondays and Wednesdays. Recitations are on Thursdays/Fridays. Homework assigned weekly and will be posted on the coursesite every Tuesday. Homework must be handed in at the beginning of the lecture on the following Monday. Homework will returned during the Thur/Fri recitation session.

8. The Periodic Table

9. Structural featureDimension (m) atomic bonding crystals (ordered atoms) second phase particles crystal texturing < 10 -10 10 -10 10 -8 -10 10 -8 -10 -4 > 10 -6 Materials Classification – Metals Dense Good electrical conductors Good heat conductors Shiny appearance – lustrous Strong Deformable- malleable Sometimes magnetic Pure metals or combinations of metallic elements (alloys) – metallic bonding

10. Materials Classification – Ceramics Hard Brittle Electrical insulators Poor thermal conduction Heat and corrosion resistant Can be transparent or opaque Compounds between metallic and non-metallic elements - Ionic or covalently bonded

11. Materials Classification – Polymers Huge variety of properties Low densities Non-conductors Low melting points Can be very flexible Organic compounds based on C, H and other non-metallic elements – covalent and secondary bonding

12. Composites -which consist of more than one material type

13. Semiconductors Ceramic materials that have electrical properties that are intermediate between that of conductors and insulators Micromechanical machines made from silicon Transistor Technology

14. Biomaterials - metal, ceramic or polymer materials designed for implanting in the human body

15. ex: hardness vs structure of steel Properties depend on structure ex: structure vs cooling rate of steel Processing can change structure Effect of Processing e.g. Mechanical Properties Hardness (BHN)

16. Electrical Resistivity of Copper: Adding “impurity” atoms to Cu increases resistivity. Deforming Cu increases resistivity. Effect of Composition & Processing e.g. Electrical Properties

17. Transmittance: - Aluminum oxide may be transparent, translucent, or opaque depending on the material structure. single crystal polycrystal: low porosity polycrystal: high porosity Effect of Structure e.g. Optical Properties

18. 1. Pick ApplicationDetermine required Properties 2. Properties Identify candidate Material(s) 3. Material Identify required Processing Processing: changes structure and overall shape ex: casting, sintering, vapor deposition, doping, forming, joining, annealing. mechanical, electrical, thermal, magnetic, optical, corrosion resistance. Material: structure, composition. Materials Selection